Metal-reworking machine



0a. 14, 1930. C. Agmx 1,778,105

METAL RE -WORK I NG MACHI NE Filed Feb. 6, 1925 2 Sheets-Sheet 1 v A. T'I'U KNEE Oct 14,1930. c. A. DIX

. METAL REJIORKING MACHINE 2 Sheets-Sheet 2 Filed Feb. 6, 1925 m6 M8 a! r M/ I In Ill iii 0 ATTUKNE Y Patented Oct. 14, 1930 PATENT OFFICE CLARENCEA. DIX, or nn'rnorr, mcm'am METAL-REWORKING MACHINE Application filed February 6, 1925. Serial at. 7,278.

This invention relates to machines for acting upon sheet material. I V

This invention has utility when incorporated in apparatus for re-working sheet metal as in symmetrically. working, along the margidthereof for beading, hemming, wiring-in operations, and the like.

Referringto the drawings: Fig. 1 is a side elevation, with parts broken away, of an embodiment of the invention as a power driven tool for re-working the margin of sheet metal, as in wiring-in for fenders, pails, cooking utensils, etc;

Fig. 2 is a view of the initial assembly of a wire with a piece of sheet stock for introduction into the machine of Fig. 1;

Fig. 3 shows the first orfianging stage of the operation;

.Fig. 4 shows the second or bending stage sometimes referred to asforming the U; V Fig. 5 shows the setting down or closing operation which inconnection with a wire is arounded edge or bead; Fig. 6 is'a plan view of the machine of Fig. 1, parts being broken away;

Fig; 7 is a partial view on the line 7 VIIVII, Fig. 6-;

Fig. 8 is a View onthe line VIIIVIII, Fig. 6; and

i 3 Fig. 9 is a view on the line IX-JX, Fig. 6.

' Base 1 is shown as having column 2 upon 'which is mounted by bolts 3, bracket 4 herein shown as carrying motor 5 having shaft 6 carrying pinion 7 in mesh with 6'loose gear 8 on shaft 9 carried by the upper portion of the column 2. Treadle 10 having mounting on fulcrum 11 in the lower portion of the colunm 2 andadjacent the base 1 has its angular position adjusted as 49 to crank 12 fast on the fulcrum 11 by set screw 13. This lever 10, 1'1, 12, has upwardly extending therefrom; tension spring 14 to depending, link 15 as an extensible connection to arm 16 of angle lever having fulmcrum 17 1x fixed onthe upper'portionof the column 2.

Fixed with the arm 16 is arm 18 from which I extends link 19" to collar 20. Spring 21 between the upper-end of link 15 andithe upper portion of the column 2serves normally to 0 hold the triead-le lO elevated. Upon depression of the treadle 10 against the resistance of l the spring 21, the link 19 serves to draw the collar 20 toward the column 2 and thereby connects clutch element 23 rotatably fixed with the shaft 9 into engagement with clutch face 24 in the speed reduction gear 8 so that the shaft 9 is driven from the motor 5 and serves through the gears 25, 26, to rotate shaft 27 radially fixed in main frame 28.

This shaft 27 has keyed end 29 permitting connection thereto of a hand socket wrench or handle so that this shaft 27 may be operated independently of the motor 5 either for minor operations or adjustments in connection with the handling of the machine.

By washers 30, 31, the position of the flanging die roll 32 axially on the shaft 27 may be fixed to be held by nut 33. Opposing this live or main driving roll 32 as a die is upper roll 34 serving as a guide and propulsion member in this terminal or first die roll pair 32, 34. This roll 34 is fixed by nut 35 on shaft 36 shown as approximately parallel to the shaft 27. This shaft 36 is mountedin auxiliary frame 37 having bear- 7 ings 38, 39, for this shaft 36. Nuts 40 on this shaft 36 determine the axial adjustment of this shaft 36 as to the auxiliary frame 37. This auxiliary frame 37 is mounted on trunnion 41 as a pivotal connection or mounting for this auxiliary frame 37 on the main frame 28. j I j Brasses or hearing elements 42 are adjusted by set screws 43 in not only determining snug fitting and roll take up for this auxiliary frame 37 as to its pivot mounting 41 but to permit a supplemental nicetyv for adjustment of the shaft 36 axially.

The shaft 27 isprovided with pinion 44 in mesh with pinion 45 carried by the shaft 36 so that this shaft 36 is a live follower shaft as to the shaft 27 This shaft 36 adjacent the die itially placing the material in position to be fed and then the crank rocked into a clamping engagement therewith. This driving relation of the shaft 36 from the shaft 27 is maintained, due to the fact that the pinions 7 44, 45, are in proximity to a common radius from the shaft 27 to the trunnion41. r

The frame 28 has extension 53 below the live die roll 32. In this extension 53 is bolt-54 mounting bracket 55 carryingguide roll 56 so that sheetstock57 may be readily fed between the die rolls 32, 34, with wire 58 having clearance at groove 59 of the propulsion die roll 34. Bolts 60 mount table '61 as an extension from the frame 28 when it is desired to have such for directing or helping sustain the stock as supplied to this machine for re-working.

Hinge pin 62-mounts die carrier frame 63 to swing as to main frame 28. 1 This position of the die carrier frame 63 is one adjustable axially of the hinge pin 62 by the insertion of removable washers 64 on this hinge pin 62. This permits adjustment .up and down for bending by roll65 loosely on shaft 66 as carried inthis die carrier frame 63, on eccentric sleeve 66 adjustable by handle 66".

Parallel with this shaft66 in this die carrier 63 is stem 67 carrying guide shoe or die 68 rockable into position toward the die roll 65. This rocking operation of this guide die 68 is eifected' by crank'69 above this die carrier frame 63. The adjustment of the die 65 by the sleeve 66 is as to the die 68.

lNith the rolls 32,34, as'a live terminal pair carried by the main frame 28, there is this intermediate or second die pair 65, 68, mounted to swing horizontally as to the frame 218 as the second pair is carried by die carrier frame 63. From this intermediate die pair thereis carried-a third or terminal die pair. This sequence of the three pairs of dies is assembled by hinge pin 70 having washers 71-permitting'adjustment axially of this hingepin 7 O of second die carrier frame 72. Set screw 73 adjusts bearing 74 for positioning trunnion 75 against fixed bearing 76 in this frame 7 2. This trunnion 7 5 carries die roll 7 7demount ably held in position by set screw 78. Opposing this die roll 77 .is die'roll 79 removably mounted by set screw 80 upon'trunnion 81 carried by eccentric 82 in the frame 72. This die roll pair 77, 7 9 isfor final setting down or closing of the re-formed metal into the hem, false wire, bead, wire or other form of reworking of the margins of sheet metal.

From this eccentric 82 extends crank- 83 which'may be rocked to shift the die roll 7 9 away from the die roll 77 and thereby release finished stock or permit entrance of stoc'kbetween these dies as a terminal-roll pair.- Set straight line between the rolls.

die roll 77.

' There isac co'rdingly provided herein a first die roll pair 32, 34, as a live pair of driving rolls. Hinged to swing horizontally relatively thereto to permit adjustment by means of the'hinge pin 62 and insertion or removal of washers 64, is die pair 65, 68, with the roll 65 alive follower roll as is the roll 34 a follower roll of the first die pair. The third die pair or second terminal pair comprises the rolls 77, 79, of which the roll 77 is the live follower roll driven from the intermediate roll gear 85. There isvertical adjustment of this frame'7 2 due to the hinge washers 71 while this frame may swing horizontally as to the frame 63 and the main frame 28; There is, accordingly, here a sequence of this three die pair assembly with the terminal pairs of die rolls. In this group there is'a live roll in the firstterminal pair as a driving roll with three follower rolls therefrom,'one of said follower rolls being in said first or terminal die pair;- asecond being in the intermediate die. pair; and the third being one of the rolls of the second terminal die pair. As to each pair, one die may be readily shifted away from the other for the insertion or re-' moval of stock. The dies may be readily ex- I changed for others as desired for accommodating dlf'ferentgages of stock or different configurations of re-working. Y

1 The guide shoe '68 is removably mounted on the rod 67 by set screw 89. The stock as passing and receiving its major or initial bending operation fronrtlie first diepair 32, 34, has noltendency to foliowthe Hanging roll 32 for such is checked by guide 90 carried by the bracket 55. c I I In this assembly the dies or stock upon which the work is performed may have a The curvature may be concave up or concave down or concave either way horizontally. The hori zontal concave directions-may betaken care of by the hinging action of the pairs relatively to each other. The vertical curvature may be adjusted by the adjustment of the hinge above the line between the terminal roll pairs, the concave side of the material to be formed" iis'downward, while with the intermediate die 'pair 65, 68, below the line between the,

terminal roll pairs, the concave side of the materlal to be'formed is'upward.

7 lie completed on either a straight or endless object, for as the lineal extent of the flanging or first stage is completed between the die pair 32, 34, suchpair may be released by roclring the handle with the drive therefrom by way of the gearing 8%, 85, 88, so that the U bending may occur at the intermediate pair and if there be stock following upon which it is not desirable to have this intermediate pair act, the crank 69 may throw the shoe 68 away from the roll and the final setting down or closing-in may occur as between the final die roll pair 77, 79, as propelled by this follower gear train from the live roll 32. As the operation is completed the arm 88 may be thrown to release the terminal portion of the stock or in the event of a ring product the formed portion at starting.

Accordin ly, the device of this disclosure is one capable of a wide range of adjustment as to size of work. There is ready substitution of the various dies. The simplicity of the manipulation makes it one capable of capacity output with convenience for operation. The die substitution range is broadened by the facilities for adjustment as disclosed. The eccentric sleeve 66 may coact with such various dies in the pair in lieu of the dies 65,

68, and such may be effective as the final stage in a two stage dle operation, say as a folding down for a seam. The adjustment of the die 7 9 in addition to its eccentric permits refinements in final straight line or up or down carrying as to the opposing die 77.

' What is claimed and it is desired to secure by Letters Patent is:

auxiliary frame and shiftable laterally of its axis with said auxiliary frame as to said main frame, said pairs of rolls having axes approximately parallel to each other and to the plane of the bendingroll.

2. A'sheet metal reworking machine comprising three pairs of dies, parallel axis hinge means mounting the die pairs to swing relatively to each other, means for adjusting the die pairs as to each otheraxially of said hinge means, and means for positively driving- -one die of each of said rality ofad'justed positions.

3 A sheet metal re-w'orking machine comprising threepairs of'dies,parallel axis hinge means mounting the die pairs to swing relatively to each other, one die of each pair being a roll, theplanes of two of said rolls aeingapproximately parallel to said hinge means axis,and means for positively driving each of said rolls from a common source as variously positioned relatively to each other.

,4. A sheet metal re-working machine comprising three pairs of dies in sequence, parallel axis hinge means mounting the die pairs to swing relatively'to each other, a die of". each terminal pair being a roll having their planes approximately parallel to said hinge means axis, means for driving one of said rolls. and transmission means carried by a second roll for driving the third roll.

5. A sheet metal re-working machine comprising three pairs of dies in sequence, parallel axis hinge means mounting the die pairs to swing" relatively to each other, a die of each terminal pair being a roll having their planes aproximately parallel to said hinge means axis, a drive for said roll of one terminal pair, and follower connections therefrom for driving the intermediate roll and the roll of the other terminal pair.

6. A sheet metal re-working machine com prising three pairs of dies, parallel axis hinge means mounting the die pairs to swing relatively to each other, a die in each pair being pairs in: a plua roll, the planes of two of said rolls being approximately parallel to said hinge means axis, and driving means for each of said rolls comprising a gear fixed with each roll as the drive therefor, said gears being in mesh in sequence.

7. sheet metal re-working machine comprising three pairs of dies in sequence, the intermediate die pair comprising but one roll, parallel axis hinge means mounting the die pairs to swing relatively to each other, three of said dies being rolls, the planes of two of said rolls being approximately parallel to said hinge means axis, one of said three rolls being a driving roll, and follower transmission connections therefrom for driving the other two rolls, said connections comprising three inter-meshing gears, one fixed with each of said rolls.

8. A sheet metal re-working machine comprising three pairs of dies in sequence, a die ineach pair being a roll, parallel axis hinge means mounting the die pairs to swing relatively to each other, and follower transmisrolls.

9. A sheet metal re-working machine comprising three pairs of dies in sequence, hinge means mounting said'die pairs, the terminal die pairs thereof being rolls having their I planes approximately parallel to said hinge means axis, a frame mounting one of said die roll pairs, parallel axis hinge'means therefrom mounting the intermediate and the J other terminal pair, and a drive for three of said rolls of theterminal roll pairs.

10. A sheet metal re-Working machine comprising three pairs of diesin sequence, hinge means mounting sa1d die palrs, said terminal pairs being rolls, the planes of two of said'rolls beingapproximately parallel to said hinge means axis and said intermediate die pair including a roll and a frame mounting one of said die roll pairs, parallel axis hinge means therefrom mounting the intermediate and other terminal pairs, a

drive for a frame mounted roll and transv mission connections therefrom through the intermediate die roll to drive a roll of the hinge mounted terminal die pair.

In Witness whereof I aflix my signature. I v v CLARENCE A. DIX. 

